Place it near the end of a FNAF sequence, after Sudden Suspense and just before the final reveal, then follow it with Oh My God Wow for the reaction shot.
關於此聲音
This is a very short, roughly one-and-a-half-second clip built around Freddy at 5AM, with a quick spoken yo that lands like a casual greeting from Freddy. It feels playful and a little unsettling, funny because the greeting is so ordinary against the late-night FNAF tension.